The Physiocrats were most prominent in France from the 1750s to
the 1780s. Thomas Jefferson, though not a physiocrat himself, met
several of them while serving in France, and was very sympathetic
to their agrarian philosophies. Katherine the Great sought council
from Francois Quesnay concerning agricultural and social reforms in
Russia. Pierre Samuel du Pont de Nemours penned "Physiocracy" and
was a friend of Jefferson. He also served briefly as President of
the National Constituent Assembly during the French Revolution, was
condemned to the guillotine but was spared after the death of
Robespierre. After the family moved to America, du Pont's son --
Eleuthère Irénée du Pont -- founded E I du Pont chemical
company.